Pointer to array

In following C program the array elements are accessed using pointer. Pointer stores base address of an array. Hence in this program ptr is a pointer to array x. 

#include< stdio.h> 

main() 

{ 

int x[ ]={10,20,30,40,50}; 

int *ptr,i; 

ptr=x; //ptr store base address of array 

for(i=0;i<5;i++,ptr++) 

{

 printf(“\n address = %u”, &x[i]); 

printf(“elements=%d %d %d %d”, x[i],*(x+i), i[x], *ptr); 

} 

} 

In ‘C’ language all arrays are implemented as pointers. Hence x[i] => *(x+i) => *(i+x) => i[x] all are equivalent statement.

Also Read

1. Static and Dynamic Memory Allocation
2. Memory Leak and Dangling Pointer
3. Memory Allocation for 2D Array
4. Dynamic Memory Allocation
5. Pointer Constant and Constant Pointer
6. Pointer Declarations and their Meanings
7. Functions and Pointers
8. Initializing Pointer to Pointer
9. Pointer to Pointer Multiple Indirection
10. Relationship between Array and Pointer
11. Pointer Arithmetic
12. Types of Pointers
13. Illustrate Basic Pointer Use
14. Using Pointer
15. Intializing Pointer
16. Declaring Pointer
17. Application of Pointers
18. Value Model VS Reference Model
19. What is Pointer